861326968131 has 48 divisors (see below), whose sum is σ = 1505628805824. Its totient is φ = 463198943232.

The previous prime is 861326968129. The next prime is 861326968189. The reversal of 861326968131 is 131869623168.

861326968131 is a `hidden beast` number, since 8 + 613 + 2 + 6 + 9 + 6 + 8 + 13 + 1 = 666.

It is not a de Polignac number, because 861326968131 - 2¹ = 861326968129 is a prime.

It is a super-2 number, since 2×861326968131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861326988131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19745661 + ... + 19789233.

It is an arithmetic number, because the mean of its divisors is an integer number (31367266788).

Almost surely, 2^861326968131 is an apocalyptic number.

861326968131 is a deficient number, since it is larger than the sum of its proper divisors (644301837693).

861326968131 is a wasteful number, since it uses less digits than its factorization.

861326968131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62060 (or 62057 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 861326968131 in words is "eight hundred sixty-one billion, three hundred twenty-six million, nine hundred sixty-eight thousand, one hundred thirty-one".